63728727 has 8 divisors (see below), whose sum is σ = 85641216. Its totient is φ = 42151032.

The previous prime is 63728711. The next prime is 63728741. The reversal of 63728727 is 72782736.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63728727 - 2⁴ = 63728711 is a prime.

It is a super-2 number, since 2×63728727² = 8122701290081058, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63728627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83253 + ... + 84014.

It is an arithmetic number, because the mean of its divisors is an integer number (10705152).

Almost surely, 2^63728727 is an apocalyptic number.

63728727 is a deficient number, since it is larger than the sum of its proper divisors (21912489).

63728727 is a wasteful number, since it uses less digits than its factorization.

63728727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167397.

The product of its digits is 197568, while the sum is 42.

The square root of 63728727 is about 7983.0274332486. The cubic root of 63728727 is about 399.4340475389.

The spelling of 63728727 in words is "sixty-three million, seven hundred twenty-eight thousand, seven hundred twenty-seven".